Norway Travel Blog – Tourism & Travel Guide: National Day of Norway Hurray! It is the 17th of May! Parades, marching orchestras, national costumes – bunads – and lots of ice-cream. No fest in Norway equals the scale of the National Day.Brazil is famous for its carnivals, Ireland – for its Saint Patrick’s Day. And what about Norway? If course, it is May 17th, the holiday of the signing of the Constitution in 1814. In Norway, National Day is a…